block-ack-test-suite.cc

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/*
 * Copyright (c) 2009, 2010 MIRKO BANCHI
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Mirko Banchi <mk.banchi@gmail.com>
 */
 
#include "ns3/ap-wifi-mac.h"
#include "ns3/attribute-container.h"
#include "ns3/boolean.h"
#include "ns3/config.h"
#include "ns3/ctrl-headers.h"
#include "ns3/double.h"
#include "ns3/mac-rx-middle.h"
#include "ns3/mobility-helper.h"
#include "ns3/originator-block-ack-agreement.h"
#include "ns3/packet-socket-client.h"
#include "ns3/packet-socket-helper.h"
#include "ns3/packet-socket-server.h"
#include "ns3/packet.h"
#include "ns3/pointer.h"
#include "ns3/qos-txop.h"
#include "ns3/qos-utils.h"
#include "ns3/recipient-block-ack-agreement.h"
#include "ns3/string.h"
#include "ns3/test.h"
#include "ns3/wifi-mac-header.h"
#include "ns3/wifi-mpdu.h"
#include "ns3/wifi-net-device.h"
#include "ns3/yans-wifi-helper.h"
 
#include <list>
 
using namespace ns3;
 
/**
 * \ingroup wifi-test
 * \ingroup tests
 *
 * \brief Packet Buffering Case A
 *
 * This simple test verifies the correctness of buffering for packets received
 * under block ack. In order to completely understand this example is important to cite
 * section 9.10.3 in IEEE802.11 standard:
 *
 * "[...] The sequence number space is considered divided into two parts, one of which
 * is “old” and one of which is “new” by means of a boundary created by adding half the
 * sequence number range to the current start of receive window (modulo 2^12)."
 */
//-------------------------------------------------------------------------------------
 
/* ----- = old packets
 * +++++ = new packets
 *
 *  CASE A: startSeq < endSeq
 *                        -  -   +
 *  initial buffer state: 0 16 56000
 *
 *
 *    0                            4095
 *    |------|++++++++++++++++|-----|
 *           ^                ^
 *           | startSeq       | endSeq = 4000
 *
 *  first received packet's sequence control = 64016 (seqNum = 4001, fragNum = 0) -
 *  second received packet's sequence control = 63984 (seqNum = 3999, fragNum = 0) +
 *  4001 is older seq number so this packet should be inserted at the buffer's begin.
 *  3999 is previous element of older of new packets: it should be inserted at the end of buffer.
 *
 *  expected buffer state: 64016 0 16 56000 63984
 *
 */
class PacketBufferingCaseA : public TestCase
{
  public:
    PacketBufferingCaseA();
    ~PacketBufferingCaseA() override;
 
  private:
    void DoRun() override;
    std::list<uint16_t> m_expectedBuffer; ///< expected test buffer
};
 
PacketBufferingCaseA::PacketBufferingCaseA()
    : TestCase("Check correct order of buffering when startSequence < endSeq")
{
    m_expectedBuffer.push_back(64016);
    m_expectedBuffer.push_back(0);
    m_expectedBuffer.push_back(16);
    m_expectedBuffer.push_back(56000);
    m_expectedBuffer.push_back(63984);
}
 
PacketBufferingCaseA::~PacketBufferingCaseA()
{
}
 
void
PacketBufferingCaseA::DoRun()
{
    std::list<uint16_t> m_buffer;
    std::list<uint16_t>::iterator i;
    std::list<uint16_t>::iterator j;
    m_buffer.push_back(0);
    m_buffer.push_back(16);
    m_buffer.push_back(56000);
 
    uint16_t endSeq = 4000;
 
    uint16_t receivedSeq = 4001 * 16;
    uint32_t mappedSeq = QosUtilsMapSeqControlToUniqueInteger(receivedSeq, endSeq);
    /* cycle to right position for this packet */
    for (i = m_buffer.begin(); i != m_buffer.end(); i++)
    {
        if (QosUtilsMapSeqControlToUniqueInteger((*i), endSeq) >= mappedSeq)
        {
            // position found
            break;
        }
    }
    m_buffer.insert(i, receivedSeq);
 
    receivedSeq = 3999 * 16;
    mappedSeq = QosUtilsMapSeqControlToUniqueInteger(receivedSeq, endSeq);
    /* cycle to right position for this packet */
    for (i = m_buffer.begin(); i != m_buffer.end(); i++)
    {
        if (QosUtilsMapSeqControlToUniqueInteger((*i), endSeq) >= mappedSeq)
        {
            // position found
            break;
        }
    }
    m_buffer.insert(i, receivedSeq);
 
    for (i = m_buffer.begin(), j = m_expectedBuffer.begin(); i != m_buffer.end(); i++, j++)
    {
        NS_TEST_EXPECT_MSG_EQ(*i, *j, "error in buffer order");
    }
}
 
/**
 * \ingroup wifi-test
 * \ingroup tests
 *
 * \brief Packet Buffering Case B
 *
 * ----- = old packets
 * +++++ = new packets
 *
 *  CASE B: startSeq > endSeq
 *                         -    +    +
 *  initial buffer state: 256 64000 16
 *
 *
 *    0                            4095
 *    |++++++|----------------|++++++|
 *           ^                ^
 *           | endSeq = 10    | startSeq
 *
 *  first received packet's sequence control = 240 (seqNum = 15, fragNum = 0)  -
 *  second received packet's sequence control = 241 (seqNum = 15, fragNum = 1) -
 *  third received packet's sequence control = 64800 (seqNum = 4050, fragNum = 0) +
 *  240 is an old packet should be inserted at the buffer's begin.
 *  241 is an old packet: second segment of the above packet.
 *  4050 is a new packet: it should be inserted between 64000 and 16.
 *
 *  expected buffer state: 240 241 256 64000 64800 16
 *
 */
class PacketBufferingCaseB : public TestCase
{
  public:
    PacketBufferingCaseB();
    ~PacketBufferingCaseB() override;
 
  private:
    void DoRun() override;
    std::list<uint16_t> m_expectedBuffer; ///< expected test buffer
};
 
PacketBufferingCaseB::PacketBufferingCaseB()
    : TestCase("Check correct order of buffering when startSequence > endSeq")
{
    m_expectedBuffer.push_back(240);
    m_expectedBuffer.push_back(241);
    m_expectedBuffer.push_back(256);
    m_expectedBuffer.push_back(64000);
    m_expectedBuffer.push_back(64800);
    m_expectedBuffer.push_back(16);
}
 
PacketBufferingCaseB::~PacketBufferingCaseB()
{
}
 
void
PacketBufferingCaseB::DoRun()
{
    std::list<uint16_t> m_buffer;
    std::list<uint16_t>::iterator i;
    std::list<uint16_t>::iterator j;
    m_buffer.push_back(256);
    m_buffer.push_back(64000);
    m_buffer.push_back(16);
 
    uint16_t endSeq = 10;
 
    uint16_t receivedSeq = 15 * 16;
    uint32_t mappedSeq = QosUtilsMapSeqControlToUniqueInteger(receivedSeq, endSeq);
    /* cycle to right position for this packet */
    for (i = m_buffer.begin(); i != m_buffer.end(); i++)
    {
        if (QosUtilsMapSeqControlToUniqueInteger((*i), endSeq) >= mappedSeq)
        {
            // position found
            break;
        }
    }
    m_buffer.insert(i, receivedSeq);
 
    receivedSeq = 15 * 16 + 1;
    mappedSeq = QosUtilsMapSeqControlToUniqueInteger(receivedSeq, endSeq);
    /* cycle to right position for this packet */
    for (i = m_buffer.begin(); i != m_buffer.end(); i++)
    {
        if (QosUtilsMapSeqControlToUniqueInteger((*i), endSeq) >= mappedSeq)
        {
            // position found
            break;
        }
    }
    m_buffer.insert(i, receivedSeq);
 
    receivedSeq = 4050 * 16;
    mappedSeq = QosUtilsMapSeqControlToUniqueInteger(receivedSeq, endSeq);
    /* cycle to right position for this packet */
    for (i = m_buffer.begin(); i != m_buffer.end(); i++)
    {
        if (QosUtilsMapSeqControlToUniqueInteger((*i), endSeq) >= mappedSeq)
        {
            // position found
            break;
        }
    }
    m_buffer.insert(i, receivedSeq);
 
    for (i = m_buffer.begin(), j = m_expectedBuffer.begin(); i != m_buffer.end(); i++, j++)
    {
        NS_TEST_EXPECT_MSG_EQ(*i, *j, "error in buffer order");
    }
}
 
/**
 * \ingroup wifi-test
 * \ingroup tests
 *
 * \brief Test for the originator block ack window
 */
class OriginatorBlockAckWindowTest : public TestCase
{
  public:
    OriginatorBlockAckWindowTest();
 
  private:
    void DoRun() override;
};
 
OriginatorBlockAckWindowTest::OriginatorBlockAckWindowTest()
    : TestCase("Check the correctness of the originator block ack window")
{
}
 
void
OriginatorBlockAckWindowTest::DoRun()
{
    uint16_t winSize = 16;
    uint16_t startingSeq = 4090;
 
    OriginatorBlockAckAgreement agreement(Mac48Address("00:00:00:00:00:01"), 0);
    agreement.SetBufferSize(winSize);
    agreement.SetStartingSequence(startingSeq);
    agreement.InitTxWindow();
 
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.GetWinSize(), winSize, "Incorrect window size");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.GetWinStart(), startingSeq, "Incorrect winStart");
    // check that all the elements in the window are cleared
    for (uint16_t i = 0; i < winSize; i++)
    {
        NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(i),
                              false,
                              "Not all flags are cleared after initialization");
    }
 
    // Notify the acknowledgment of 5 packets
    WifiMacHeader hdr;
    hdr.SetType(WIFI_MAC_QOSDATA);
    Ptr<WifiMpdu> mpdu = Create<WifiMpdu>(Create<Packet>(), hdr);
    uint16_t seqNumber = startingSeq;
    mpdu->GetHeader().SetSequenceNumber(seqNumber);
    agreement.NotifyAckedMpdu(mpdu);
 
    mpdu->GetHeader().SetSequenceNumber(++seqNumber %= SEQNO_SPACE_SIZE);
    agreement.NotifyAckedMpdu(mpdu);
 
    mpdu->GetHeader().SetSequenceNumber(++seqNumber %= SEQNO_SPACE_SIZE);
    agreement.NotifyAckedMpdu(mpdu);
 
    mpdu->GetHeader().SetSequenceNumber(++seqNumber %= SEQNO_SPACE_SIZE);
    agreement.NotifyAckedMpdu(mpdu);
 
    mpdu->GetHeader().SetSequenceNumber(++seqNumber %= SEQNO_SPACE_SIZE);
    agreement.NotifyAckedMpdu(mpdu);
 
    // the current window must look like this:
    //
    // |0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|
    //            ^
    //            |
    //           HEAD
 
    startingSeq = (seqNumber + 1) % SEQNO_SPACE_SIZE;
    NS_TEST_EXPECT_MSG_EQ(agreement.GetStartingSequence(),
                          startingSeq,
                          "Incorrect starting sequence after 5 acknowledgments");
    for (uint16_t i = 0; i < winSize; i++)
    {
        NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(i),
                              false,
                              "Not all flags are cleared after 5 acknowledgments");
    }
 
    // the next MPDU is not acknowledged, hence the window is blocked while the
    // subsequent 4 MPDUs are acknowledged
    ++seqNumber %= SEQNO_SPACE_SIZE;
    mpdu->GetHeader().SetSequenceNumber(++seqNumber %= SEQNO_SPACE_SIZE);
    agreement.NotifyAckedMpdu(mpdu);
 
    mpdu->GetHeader().SetSequenceNumber(++seqNumber %= SEQNO_SPACE_SIZE);
    agreement.NotifyAckedMpdu(mpdu);
 
    mpdu->GetHeader().SetSequenceNumber(++seqNumber %= SEQNO_SPACE_SIZE);
    agreement.NotifyAckedMpdu(mpdu);
 
    mpdu->GetHeader().SetSequenceNumber(++seqNumber %= SEQNO_SPACE_SIZE);
    agreement.NotifyAckedMpdu(mpdu);
 
    // the current window must look like this:
    //
    // |0|0|0|0|0|0|1|1|1|1|0|0|0|0|0|0|
    //            ^
    //            |
    //           HEAD
 
    NS_TEST_EXPECT_MSG_EQ(agreement.GetStartingSequence(),
                          startingSeq,
                          "Incorrect starting sequence after 1 unacknowledged MPDU");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(0),
                          false,
                          "Incorrect flag after 1 unacknowledged MPDU");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(1),
                          true,
                          "Incorrect flag after 1 unacknowledged MPDU");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(2),
                          true,
                          "Incorrect flag after 1 unacknowledged MPDU");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(3),
                          true,
                          "Incorrect flag after 1 unacknowledged MPDU");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(4),
                          true,
                          "Incorrect flag after 1 unacknowledged MPDU");
    for (uint16_t i = 5; i < winSize; i++)
    {
        NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(i),
                              false,
                              "Incorrect flag after 1 unacknowledged MPDU");
    }
 
    // the missing MPDU is now acknowledged; the window moves forward and the starting
    // sequence number is the one of the first unacknowledged MPDU
    mpdu->GetHeader().SetSequenceNumber(startingSeq);
    agreement.NotifyAckedMpdu(mpdu);
 
    // the current window must look like this:
    //
    // |0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|
    //                      ^
    //                      |
    //                     HEAD
 
    startingSeq = (seqNumber + 1) % SEQNO_SPACE_SIZE;
    NS_TEST_EXPECT_MSG_EQ(agreement.GetStartingSequence(),
                          startingSeq,
                          "Incorrect starting sequence after acknowledgment of missing MPDU");
    for (uint16_t i = 0; i < winSize; i++)
    {
        NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(i),
                              false,
                              "Not all flags are cleared after acknowledgment of missing MPDU");
    }
 
    // Now, create a hole of 3 MPDUs before 4 acknowledged MPDUs, another hole of 2 MPDUs before 3
    // acknowledged MPDUs
    seqNumber = (seqNumber + 4) % SEQNO_SPACE_SIZE;
    mpdu->GetHeader().SetSequenceNumber(seqNumber);
    agreement.NotifyAckedMpdu(mpdu);
 
    mpdu->GetHeader().SetSequenceNumber(++seqNumber %= SEQNO_SPACE_SIZE);
    agreement.NotifyAckedMpdu(mpdu);
 
    mpdu->GetHeader().SetSequenceNumber(++seqNumber %= SEQNO_SPACE_SIZE);
    agreement.NotifyAckedMpdu(mpdu);
 
    mpdu->GetHeader().SetSequenceNumber(++seqNumber %= SEQNO_SPACE_SIZE);
    agreement.NotifyAckedMpdu(mpdu);
 
    seqNumber = (seqNumber + 3) % SEQNO_SPACE_SIZE;
    mpdu->GetHeader().SetSequenceNumber(seqNumber);
    agreement.NotifyAckedMpdu(mpdu);
 
    mpdu->GetHeader().SetSequenceNumber(++seqNumber %= SEQNO_SPACE_SIZE);
    agreement.NotifyAckedMpdu(mpdu);
 
    mpdu->GetHeader().SetSequenceNumber(++seqNumber %= SEQNO_SPACE_SIZE);
    agreement.NotifyAckedMpdu(mpdu);
 
    // the current window must look like this:
    //
    // |1|0|0|1|1|1|0|0|0|0|0|0|0|1|1|1|
    //                      ^
    //                      |
    //                     HEAD
 
    NS_TEST_EXPECT_MSG_EQ(agreement.GetStartingSequence(),
                          startingSeq,
                          "Incorrect starting sequence after 3 unacknowledged MPDUs");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(0),
                          false,
                          "Incorrect flag after 3 unacknowledged MPDUs");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(1),
                          false,
                          "Incorrect flag after 3 unacknowledged MPDUs");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(2),
                          false,
                          "Incorrect flag after 3 unacknowledged MPDUs");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(3),
                          true,
                          "Incorrect flag after 3 unacknowledged MPDUs");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(4),
                          true,
                          "Incorrect flag after 3 unacknowledged MPDUs");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(5),
                          true,
                          "Incorrect flag after 3 unacknowledged MPDUs");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(6),
                          true,
                          "Incorrect flag after 3 unacknowledged MPDUs");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(7),
                          false,
                          "Incorrect flag after 3 unacknowledged MPDUs");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(8),
                          false,
                          "Incorrect flag after 3 unacknowledged MPDUs");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(9),
                          true,
                          "Incorrect flag after 3 unacknowledged MPDUs");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(10),
                          true,
                          "Incorrect flag after 3 unacknowledged MPDUs");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(11),
                          true,
                          "Incorrect flag after 3 unacknowledged MPDUs");
    for (uint16_t i = 12; i < winSize; i++)
    {
        NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(i),
                              false,
                              "Incorrect flag after 3 unacknowledged MPDUs");
    }
 
    // the transmission of an MPDU beyond the current window (by 2 positions) is
    // notified, hence the window moves forward 2 positions
    seqNumber = (agreement.m_txWindow.GetWinEnd() + 2) % SEQNO_SPACE_SIZE;
    mpdu->GetHeader().SetSequenceNumber(seqNumber);
    agreement.NotifyTransmittedMpdu(mpdu);
 
    // the current window must look like this:
    //
    // |1|0|0|1|1|1|0|0|0|0|0|0|0|1|1|1|
    //                          ^
    //                          |
    //                         HEAD
 
    startingSeq = (startingSeq + 2) % SEQNO_SPACE_SIZE;
    NS_TEST_EXPECT_MSG_EQ(
        agreement.GetStartingSequence(),
        startingSeq,
        "Incorrect starting sequence after transmitting an MPDU beyond the current window");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(0),
                          false,
                          "Incorrect flag after transmitting an MPDU beyond the current window");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(1),
                          true,
                          "Incorrect flag after transmitting an MPDU beyond the current window");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(2),
                          true,
                          "Incorrect flag after transmitting an MPDU beyond the current window");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(3),
                          true,
                          "Incorrect flag after transmitting an MPDU beyond the current window");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(4),
                          true,
                          "Incorrect flag after transmitting an MPDU beyond the current window");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(5),
                          false,
                          "Incorrect flag after transmitting an MPDU beyond the current window");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(6),
                          false,
                          "Incorrect flag after transmitting an MPDU beyond the current window");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(7),
                          true,
                          "Incorrect flag after transmitting an MPDU beyond the current window");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(8),
                          true,
                          "Incorrect flag after transmitting an MPDU beyond the current window");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(9),
                          true,
                          "Incorrect flag after transmitting an MPDU beyond the current window");
    for (uint16_t i = 10; i < winSize; i++)
    {
        NS_TEST_EXPECT_MSG_EQ(
            agreement.m_txWindow.At(i),
            false,
            "Incorrect flag after transmitting an MPDU beyond the current window");
    }
 
    // another MPDU is transmitted beyond the current window. Now, the window advances
    // until the first unacknowledged MPDU
    seqNumber = (agreement.m_txWindow.GetWinEnd() + 1) % SEQNO_SPACE_SIZE;
    mpdu->GetHeader().SetSequenceNumber(seqNumber);
    agreement.NotifyTransmittedMpdu(mpdu);
 
    // the current window must look like this:
    //
    // |0|0|0|1|1|1|0|0|0|0|0|0|0|0|0|0|
    //    ^
    //    |
    //   HEAD
 
    startingSeq = (startingSeq + 5) % SEQNO_SPACE_SIZE;
    NS_TEST_EXPECT_MSG_EQ(
        agreement.GetStartingSequence(),
        startingSeq,
        "Incorrect starting sequence after transmitting another MPDU beyond the current window");
    NS_TEST_EXPECT_MSG_EQ(
        agreement.m_txWindow.At(0),
        false,
        "Incorrect flag after transmitting another MPDU beyond the current window");
    NS_TEST_EXPECT_MSG_EQ(
        agreement.m_txWindow.At(1),
        false,
        "Incorrect flag after transmitting another MPDU beyond the current window");
    NS_TEST_EXPECT_MSG_EQ(
        agreement.m_txWindow.At(2),
        true,
        "Incorrect flag after transmitting another MPDU beyond the current window");
    NS_TEST_EXPECT_MSG_EQ(
        agreement.m_txWindow.At(3),
        true,
        "Incorrect flag after transmitting another MPDU beyond the current window");
    NS_TEST_EXPECT_MSG_EQ(
        agreement.m_txWindow.At(4),
        true,
        "Incorrect flag after transmitting another MPDU beyond the current window");
    for (uint16_t i = 5; i < winSize; i++)
    {
        NS_TEST_EXPECT_MSG_EQ(
            agreement.m_txWindow.At(i),
            false,
            "Incorrect flag after transmitting another MPDU beyond the current window");
    }
 
    // the MPDU next to winStart is discarded, hence the window advances to make it an old packet.
    // Since the subsequent MPDUs have been acknowledged, the window advances further.
    seqNumber = (startingSeq + 1) % SEQNO_SPACE_SIZE;
    mpdu->GetHeader().SetSequenceNumber(seqNumber);
    agreement.NotifyDiscardedMpdu(mpdu);
 
    // the current window must look like this:
    //
    // |0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|
    //              ^
    //              |
    //             HEAD
 
    startingSeq = (startingSeq + 5) % SEQNO_SPACE_SIZE;
    NS_TEST_EXPECT_MSG_EQ(agreement.GetStartingSequence(),
                          startingSeq,
                          "Incorrect starting sequence after discarding an MPDU");
    for (uint16_t i = 0; i < winSize; i++)
    {
        NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(i),
                              false,
                              "Incorrect flag after discarding an MPDU");
    }
 
    // Finally, check that the window correctly advances when the MPDU with the starting sequence
    // number is acknowledged after being the only unacknowledged MPDU
    for (uint16_t i = 1; i < winSize; i++)
    {
        mpdu->GetHeader().SetSequenceNumber((startingSeq + i) % SEQNO_SPACE_SIZE);
        agreement.NotifyAckedMpdu(mpdu);
    }
 
    // the current window must look like this:
    //
    // |1|1|1|1|1|1|0|1|1|1|1|1|1|1|1|1|
    //              ^
    //              |
    //             HEAD
 
    NS_TEST_EXPECT_MSG_EQ(agreement.GetStartingSequence(),
                          startingSeq,
                          "Incorrect starting sequence after acknowledging all but the first MPDU");
    NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(0),
                          false,
                          "Incorrect flag after acknowledging all but the first MPDU");
    for (uint16_t i = 1; i < winSize; i++)
    {
        NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(i),
                              true,
                              "Incorrect flag after acknowledging all but the first MPDU");
    }
 
    // acknowledge the first MPDU
    mpdu->GetHeader().SetSequenceNumber(startingSeq % SEQNO_SPACE_SIZE);
    agreement.NotifyAckedMpdu(mpdu);
 
    // the current window must look like this:
    //
    // |0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|
    //              ^
    //              |
    //             HEAD
 
    startingSeq = (startingSeq + winSize) % SEQNO_SPACE_SIZE;
    NS_TEST_EXPECT_MSG_EQ(agreement.GetStartingSequence(),
                          startingSeq,
                          "Incorrect starting sequence after acknowledging the first MPDU");
    for (uint16_t i = 0; i < winSize; i++)
    {
        NS_TEST_EXPECT_MSG_EQ(agreement.m_txWindow.At(i),
                              false,
                              "Incorrect flag after acknowledging the first MPDU");
    }
}
 
/**
 * \ingroup wifi-test
 * \ingroup tests
 *
 * \brief Test for block ack header
 */
class CtrlBAckResponseHeaderTest : public TestCase
{
  public:
    CtrlBAckResponseHeaderTest();
 
  private:
    void DoRun() override;
    CtrlBAckResponseHeader m_blockAckHdr; ///< block ack header
};
 
CtrlBAckResponseHeaderTest::CtrlBAckResponseHeaderTest()
    : TestCase("Check the correctness of block ack compressed bitmap")
{
}
 
void
CtrlBAckResponseHeaderTest::DoRun()
{
    m_blockAckHdr.SetType(BlockAckType::COMPRESSED);
 
    // Case 1: startSeq < endSeq
    //           179        242
    m_blockAckHdr.SetStartingSequence(179);
    for (uint16_t i = 179; i < 220; i++)
    {
        m_blockAckHdr.SetReceivedPacket(i);
    }
    for (uint16_t i = 225; i <= 242; i++)
    {
        m_blockAckHdr.SetReceivedPacket(i);
    }
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[0], 0xff, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[1], 0xff, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[2], 0xff, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[3], 0xff, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[4], 0xff, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[5], 0xc1, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[6], 0xff, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[7], 0xff, "error in compressed bitmap");
    m_blockAckHdr.SetReceivedPacket(1500);
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[0], 0xff, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[1], 0xff, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[2], 0xff, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[3], 0xff, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[4], 0xff, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[5], 0xc1, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[6], 0xff, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[7], 0xff, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.IsPacketReceived(220), false, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.IsPacketReceived(225), true, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.IsPacketReceived(1500),
                          false,
                          "error in compressed bitmap");
 
    m_blockAckHdr.ResetBitmap();
 
    // Case 2: startSeq > endSeq
    //           4090       58
    m_blockAckHdr.SetStartingSequence(4090);
    for (uint16_t i = 4090; i != 10; i = (i + 1) % 4096)
    {
        m_blockAckHdr.SetReceivedPacket(i);
    }
    for (uint16_t i = 22; i < 25; i++)
    {
        m_blockAckHdr.SetReceivedPacket(i);
    }
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[0], 0xff, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[1], 0xff, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[2], 0x00, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[3], 0x70, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[4], 0x00, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[5], 0x00, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[6], 0x00, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[7], 0x00, "error in compressed bitmap");
    m_blockAckHdr.SetReceivedPacket(80);
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[0], 0xff, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[1], 0xff, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[2], 0x00, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[3], 0x70, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[4], 0x00, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[5], 0x00, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[6], 0x00, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.GetBitmap()[7], 0x00, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.IsPacketReceived(4090), true, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.IsPacketReceived(4095), true, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.IsPacketReceived(10), false, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.IsPacketReceived(35), false, "error in compressed bitmap");
    NS_TEST_EXPECT_MSG_EQ(m_blockAckHdr.IsPacketReceived(80), false, "error in compressed bitmap");
}
 
/**
 * \ingroup wifi-test
 * \ingroup tests
 *
 * \brief Test for recipient reordering buffer operations
 */
class BlockAckRecipientBufferTest : public TestCase
{
  public:
    /**
     * \brief Constructor
     * \param ssn the Starting Sequence Number used to initialize WinStartB
     */
    BlockAckRecipientBufferTest(uint16_t ssn);
    ~BlockAckRecipientBufferTest() override;
 
    void DoRun() override;
 
    /**
     * Keep track of MPDUs received on the given link that are forwarded up.
     *
     * \param mpdu an MPDU that is forwarded up
     * \param linkId the ID of the given link
     */
    void ForwardUp(Ptr<const WifiMpdu> mpdu, uint8_t linkId);
 
  private:
    uint16_t m_ssn; //!< the Starting Sequence Number used to initialize WinStartB
    std::list<Ptr<const WifiMpdu>> m_fwup; //!< list of MPDUs that have been forwarded up
};
 
BlockAckRecipientBufferTest::BlockAckRecipientBufferTest(uint16_t ssn)
    : TestCase("Test case for Block Ack recipient reordering buffer operations"),
      m_ssn(ssn)
{
}
 
BlockAckRecipientBufferTest::~BlockAckRecipientBufferTest()
{
}
 
void
BlockAckRecipientBufferTest::ForwardUp(Ptr<const WifiMpdu> mpdu, uint8_t linkId)
{
    m_fwup.push_back(mpdu);
}
 
void
BlockAckRecipientBufferTest::DoRun()
{
    Ptr<MacRxMiddle> rxMiddle = Create<MacRxMiddle>();
    rxMiddle->SetForwardCallback(MakeCallback(&BlockAckRecipientBufferTest::ForwardUp, this));
 
    RecipientBlockAckAgreement agreement(Mac48Address::Allocate() /* originator */,
                                         true /* amsduSupported */,
                                         0 /* tid */,
                                         10 /* bufferSize */,
                                         0 /* timeout */,
                                         m_ssn,
                                         true /* htSupported */);
    agreement.SetMacRxMiddle(rxMiddle);
 
    WifiMacHeader hdr;
    hdr.SetType(WIFI_MAC_QOSDATA);
    hdr.SetAddr1(Mac48Address::Allocate());
    hdr.SetQosTid(0);
 
    // Notify the reception of an MPDU with SN = SSN.
    hdr.SetSequenceNumber(m_ssn);
    agreement.NotifyReceivedMpdu(Create<WifiMpdu>(Create<Packet>(), hdr));
 
    // This MPDU is forwarded up and WinStartB is set to SSN + 1.
    NS_TEST_ASSERT_MSG_EQ(m_fwup.size(), 1, "MPDU with SN=SSN must have been forwarded up");
    NS_TEST_ASSERT_MSG_EQ(m_fwup.front()->GetHeader().GetSequenceNumber(),
                          m_ssn,
                          "The MPDU forwarded up is not the expected one");
 
    m_fwup.clear();
 
    // Notify the reception of MPDUs with SN = SSN + {4, 2, 5, 3, 10, 7}
    // Recipient buffer:   | |X|X|X|X| |X| | |X|
    //                      ^
    //                      |
    //                   SSN + 1
    hdr.SetSequenceNumber((m_ssn + 4) % SEQNO_SPACE_SIZE);
    agreement.NotifyReceivedMpdu(Create<WifiMpdu>(Create<Packet>(), hdr));
    hdr.SetSequenceNumber((m_ssn + 2) % SEQNO_SPACE_SIZE);
    agreement.NotifyReceivedMpdu(Create<WifiMpdu>(Create<Packet>(), hdr));
    hdr.SetSequenceNumber((m_ssn + 5) % SEQNO_SPACE_SIZE);
    agreement.NotifyReceivedMpdu(Create<WifiMpdu>(Create<Packet>(), hdr));
    hdr.SetSequenceNumber((m_ssn + 3) % SEQNO_SPACE_SIZE);
    agreement.NotifyReceivedMpdu(Create<WifiMpdu>(Create<Packet>(), hdr));
    hdr.SetSequenceNumber((m_ssn + 10) % SEQNO_SPACE_SIZE);
    agreement.NotifyReceivedMpdu(Create<WifiMpdu>(Create<Packet>(), hdr));
    hdr.SetSequenceNumber((m_ssn + 7) % SEQNO_SPACE_SIZE);
    agreement.NotifyReceivedMpdu(Create<WifiMpdu>(Create<Packet>(), hdr));
 
    // No MPDU is forwarded up because the one with SN = SSN + 1 is missing
    NS_TEST_ASSERT_MSG_EQ(m_fwup.empty(), true, "No MPDU must have been forwarded up");
 
    // Notify the reception of an "old" MPDU (SN = SSN)
    hdr.SetSequenceNumber(m_ssn);
    agreement.NotifyReceivedMpdu(Create<WifiMpdu>(Create<Packet>(), hdr));
 
    // No MPDU is forwarded up
    NS_TEST_ASSERT_MSG_EQ(m_fwup.empty(), true, "No MPDU must have been forwarded up");
 
    // Notify the reception of a duplicate MPDU (SN = SSN + 2)
    hdr.SetSequenceNumber((m_ssn + 2) % SEQNO_SPACE_SIZE);
    agreement.NotifyReceivedMpdu(Create<WifiMpdu>(Create<Packet>(10), hdr));
 
    // No MPDU is forwarded up
    NS_TEST_ASSERT_MSG_EQ(m_fwup.empty(), true, "No MPDU must have been forwarded up");
 
    // Notify the reception of an MPDU with SN = SSN + 1
    // Recipient buffer:   |X|X|X|X|X| |X| | |X|
    //                      ^
    //                      |
    //                   SSN + 1
    hdr.SetSequenceNumber((m_ssn + 1) % SEQNO_SPACE_SIZE);
    agreement.NotifyReceivedMpdu(Create<WifiMpdu>(Create<Packet>(), hdr));
 
    // All the MPDUs with SN = SSN + {1, 2, 3, 4, 5} must have been forwarded up in order
    NS_TEST_ASSERT_MSG_EQ(m_fwup.size(), 5, "5 MPDUs must have been forwarded up");
 
    NS_TEST_ASSERT_MSG_EQ(m_fwup.front()->GetHeader().GetSequenceNumber(),
                          (m_ssn + 1) % SEQNO_SPACE_SIZE,
                          "The MPDU forwarded up is not the expected one");
    m_fwup.pop_front();
 
    NS_TEST_ASSERT_MSG_EQ(m_fwup.front()->GetHeader().GetSequenceNumber(),
                          (m_ssn + 2) % SEQNO_SPACE_SIZE,
                          "The MPDU forwarded up is not the expected one");
    NS_TEST_ASSERT_MSG_EQ(m_fwup.front()->GetPacketSize(),
                          0,
                          "The MPDU forwarded up is not the expected one");
    m_fwup.pop_front();
 
    NS_TEST_ASSERT_MSG_EQ(m_fwup.front()->GetHeader().GetSequenceNumber(),
                          (m_ssn + 3) % SEQNO_SPACE_SIZE,
                          "The MPDU forwarded up is not the expected one");
    m_fwup.pop_front();
 
    NS_TEST_ASSERT_MSG_EQ(m_fwup.front()->GetHeader().GetSequenceNumber(),
                          (m_ssn + 4) % SEQNO_SPACE_SIZE,
                          "The MPDU forwarded up is not the expected one");
    m_fwup.pop_front();
 
    NS_TEST_ASSERT_MSG_EQ(m_fwup.front()->GetHeader().GetSequenceNumber(),
                          (m_ssn + 5) % SEQNO_SPACE_SIZE,
                          "The MPDU forwarded up is not the expected one");
    m_fwup.pop_front();
 
    // Recipient buffer:   | |X| | |X| | | | | |
    //                      ^                 ^
    //                      |                 |
    //                   SSN + 6           SSN + 15
    // Notify the reception of an MPDU beyond the current window (SN = SSN + 17)
    hdr.SetSequenceNumber((m_ssn + 17) % SEQNO_SPACE_SIZE);
    agreement.NotifyReceivedMpdu(Create<WifiMpdu>(Create<Packet>(), hdr));
 
    // WinStartB is set to SSN + 8 (so that WinEndB = SSN + 17). The MPDU with
    // SN = SSN + 7 is forwarded up, irrespective of the missed reception of the
    // MPDU with SN = SSN + 6
    NS_TEST_ASSERT_MSG_EQ(m_fwup.size(), 1, "One MPDU must have been forwarded up");
 
    NS_TEST_ASSERT_MSG_EQ(m_fwup.front()->GetHeader().GetSequenceNumber(),
                          (m_ssn + 7) % SEQNO_SPACE_SIZE,
                          "The MPDU forwarded up is not the expected one");
    m_fwup.pop_front();
 
    // Recipient buffer:   | | |X| | | | | | |X|
    //                      ^                 ^
    //                      |                 |
    //                   SSN + 8           SSN + 17
    // Notify the reception of a BlockAckReq with SSN = SSN + 7
    agreement.NotifyReceivedBar((m_ssn + 7) % SEQNO_SPACE_SIZE);
 
    // No MPDU is forwarded up
    NS_TEST_ASSERT_MSG_EQ(m_fwup.empty(), true, "No MPDU must have been forwarded up");
 
    // Notify the reception of a BlockAckReq with SSN = SSN + 8
    agreement.NotifyReceivedBar((m_ssn + 8) % SEQNO_SPACE_SIZE);
 
    // No MPDU is forwarded up
    NS_TEST_ASSERT_MSG_EQ(m_fwup.empty(), true, "No MPDU must have been forwarded up");
 
    // Notify the reception of MPDUs with SN = SSN + {9, 11}
    // Recipient buffer:   | |X|X|X| | | | | |X|
    //                      ^                 ^
    //                      |                 |
    //                   SSN + 8           SSN + 17
    hdr.SetSequenceNumber((m_ssn + 9) % SEQNO_SPACE_SIZE);
    agreement.NotifyReceivedMpdu(Create<WifiMpdu>(Create<Packet>(), hdr));
    hdr.SetSequenceNumber((m_ssn + 11) % SEQNO_SPACE_SIZE);
    agreement.NotifyReceivedMpdu(Create<WifiMpdu>(Create<Packet>(), hdr));
 
    // No MPDU is forwarded up because the one with SN = SSN + 8 is missing
    NS_TEST_ASSERT_MSG_EQ(m_fwup.empty(), true, "No MPDU must have been forwarded up");
 
    // Notify the reception of a BlockAckReq with SSN = SSN + 10
    agreement.NotifyReceivedBar((m_ssn + 10) % SEQNO_SPACE_SIZE);
 
    // Forward up buffered MPDUs with SN < SSN + 10 (the MPDU with SN = SSN + 9)
    // and then buffered MPDUs with SN >= SSN + 10 until a hole is found (MPDUs
    // with SN = SSN + 10 and SN = SSN + 11)
    NS_TEST_ASSERT_MSG_EQ(m_fwup.size(), 3, "3 MPDUs must have been forwarded up");
 
    NS_TEST_ASSERT_MSG_EQ(m_fwup.front()->GetHeader().GetSequenceNumber(),
                          (m_ssn + 9) % SEQNO_SPACE_SIZE,
                          "The MPDU forwarded up is not the expected one");
    m_fwup.pop_front();
 
    NS_TEST_ASSERT_MSG_EQ(m_fwup.front()->GetHeader().GetSequenceNumber(),
                          (m_ssn + 10) % SEQNO_SPACE_SIZE,
                          "The MPDU forwarded up is not the expected one");
    m_fwup.pop_front();
 
    NS_TEST_ASSERT_MSG_EQ(m_fwup.front()->GetHeader().GetSequenceNumber(),
                          (m_ssn + 11) % SEQNO_SPACE_SIZE,
                          "The MPDU forwarded up is not the expected one");
    m_fwup.pop_front();
 
    Simulator::Run();
    Simulator::Destroy();
}
 
/**
 * \ingroup wifi-test
 * \ingroup tests
 *
 * \brief Test for Multi-STA block ack header
 */
class MultiStaCtrlBAckResponseHeaderTest : public TestCase
{
  public:
    MultiStaCtrlBAckResponseHeaderTest();
 
  private:
    void DoRun() override;
};
 
MultiStaCtrlBAckResponseHeaderTest::MultiStaCtrlBAckResponseHeaderTest()
    : TestCase("Check the correctness of Multi-STA block ack")
{
}
 
void
MultiStaCtrlBAckResponseHeaderTest::DoRun()
{
    // Create a Multi-STA Block Ack with 6 Per AID TID Info subfields
    BlockAckType baType(BlockAckType::MULTI_STA, {0, 4, 8, 16, 32, 8});
 
    CtrlBAckResponseHeader blockAck;
    blockAck.SetType(baType);
 
    /* 1st Per AID TID Info subfield */
    uint16_t aid1 = 100;
    bool ackType1 = true;
    uint8_t tid1 = 1;
 
    blockAck.SetAid11(aid1, 0);
    blockAck.SetAckType(ackType1, 0);
    blockAck.SetTidInfo(tid1, 0);
 
    /* 2nd Per AID TID Info subfield */
    uint16_t aid2 = 200;
    bool ackType2 = false;
    uint8_t tid2 = 2;
    uint16_t startSeq2 = 1000;
 
    blockAck.SetAid11(aid2, 1);
    blockAck.SetAckType(ackType2, 1);
    blockAck.SetTidInfo(tid2, 1);
    blockAck.SetStartingSequence(startSeq2, 1);
    // 1st byte of the bitmap: 01010101
    for (uint16_t i = startSeq2; i < startSeq2 + 8; i += 2)
    {
        blockAck.SetReceivedPacket(i, 1);
    }
    // 2nd byte of the bitmap: 10101010
    for (uint16_t i = startSeq2 + 9; i < startSeq2 + 16; i += 2)
    {
        blockAck.SetReceivedPacket(i, 1);
    }
    // 3rd byte of the bitmap: 00000000
    // 4th byte of the bitmap: 11111111
    for (uint16_t i = startSeq2 + 24; i < startSeq2 + 32; i++)
    {
        blockAck.SetReceivedPacket(i, 1);
    }
 
    /* 3rd Per AID TID Info subfield */
    uint16_t aid3 = 300;
    bool ackType3 = false;
    uint8_t tid3 = 3;
    uint16_t startSeq3 = 2000;
 
    blockAck.SetAid11(aid3, 2);
    blockAck.SetAckType(ackType3, 2);
    blockAck.SetTidInfo(tid3, 2);
    blockAck.SetStartingSequence(startSeq3, 2);
    // 1st byte of the bitmap: 01010101
    for (uint16_t i = startSeq3; i < startSeq3 + 8; i += 2)
    {
        blockAck.SetReceivedPacket(i, 2);
    }
    // 2nd byte of the bitmap: 10101010
    for (uint16_t i = startSeq3 + 9; i < startSeq3 + 16; i += 2)
    {
        blockAck.SetReceivedPacket(i, 2);
    }
    // 3rd byte of the bitmap: 00000000
    // 4th byte of the bitmap: 11111111
    for (uint16_t i = startSeq3 + 24; i < startSeq3 + 32; i++)
    {
        blockAck.SetReceivedPacket(i, 2);
    }
    // 5th byte of the bitmap: 00001111
    for (uint16_t i = startSeq3 + 32; i < startSeq3 + 36; i++)
    {
        blockAck.SetReceivedPacket(i, 2);
    }
    // 6th byte of the bitmap: 11110000
    for (uint16_t i = startSeq3 + 44; i < startSeq3 + 48; i++)
    {
        blockAck.SetReceivedPacket(i, 2);
    }
    // 7th byte of the bitmap: 00000000
    // 8th byte of the bitmap: 11111111
    for (uint16_t i = startSeq3 + 56; i < startSeq3 + 64; i++)
    {
        blockAck.SetReceivedPacket(i, 2);
    }
 
    /* 4th Per AID TID Info subfield */
    uint16_t aid4 = 400;
    bool ackType4 = false;
    uint8_t tid4 = 4;
    uint16_t startSeq4 = 3000;
 
    blockAck.SetAid11(aid4, 3);
    blockAck.SetAckType(ackType4, 3);
    blockAck.SetTidInfo(tid4, 3);
    blockAck.SetStartingSequence(startSeq4, 3);
    // 1st byte of the bitmap: 01010101
    for (uint16_t i = startSeq4; i < startSeq4 + 8; i += 2)
    {
        blockAck.SetReceivedPacket(i, 3);
    }
    // 2nd byte of the bitmap: 10101010
    for (uint16_t i = startSeq4 + 9; i < startSeq4 + 16; i += 2)
    {
        blockAck.SetReceivedPacket(i, 3);
    }
    // 3rd byte of the bitmap: 00000000
    // 4th byte of the bitmap: 11111111
    for (uint16_t i = startSeq4 + 24; i < startSeq4 + 32; i++)
    {
        blockAck.SetReceivedPacket(i, 3);
    }
    // 5th byte of the bitmap: 00001111
    for (uint16_t i = startSeq4 + 32; i < startSeq4 + 36; i++)
    {
        blockAck.SetReceivedPacket(i, 3);
    }
    // 6th byte of the bitmap: 11110000
    for (uint16_t i = startSeq4 + 44; i < startSeq4 + 48; i++)
    {
        blockAck.SetReceivedPacket(i, 3);
    }
    // 7th byte of the bitmap: 00000000
    // 8th byte of the bitmap: 11111111
    for (uint16_t i = startSeq4 + 56; i < startSeq4 + 64; i++)
    {
        blockAck.SetReceivedPacket(i, 3);
    }
    // 9th byte of the bitmap: 00000000
    // 10th byte of the bitmap: 11111111
    for (uint16_t i = startSeq4 + 72; i < startSeq4 + 80; i++)
    {
        blockAck.SetReceivedPacket(i, 3);
    }
    // 11th byte of the bitmap: 00000000
    // 12th byte of the bitmap: 11111111
    for (uint16_t i = startSeq4 + 88; i < startSeq4 + 96; i++)
    {
        blockAck.SetReceivedPacket(i, 3);
    }
    // 13th byte of the bitmap: 00000000
    // 14th byte of the bitmap: 11111111
    for (uint16_t i = startSeq4 + 104; i < startSeq4 + 112; i++)
    {
        blockAck.SetReceivedPacket(i, 3);
    }
    // 15th byte of the bitmap: 00000000
    // 16th byte of the bitmap: 11111111
    for (uint16_t i = startSeq4 + 120; i < startSeq4 + 128; i++)
    {
        blockAck.SetReceivedPacket(i, 3);
    }
 
    /* 5th Per AID TID Info subfield */
    uint16_t aid5 = 500;
    bool ackType5 = false;
    uint8_t tid5 = 5;
    uint16_t startSeq5 = 4000;
 
    blockAck.SetAid11(aid5, 4);
    blockAck.SetAckType(ackType5, 4);
    blockAck.SetTidInfo(tid5, 4);
    blockAck.SetStartingSequence(startSeq5, 4);
    // 1st byte of the bitmap: 01010101
    for (int i = startSeq5; i < startSeq5 + 8; i += 2)
    {
        blockAck.SetReceivedPacket(i, 4);
    }
    // 2nd byte of the bitmap: 10101010
    for (int i = startSeq5 + 9; i < startSeq5 + 16; i += 2)
    {
        blockAck.SetReceivedPacket(i, 4);
    }
    // 3rd byte of the bitmap: 00000000
    // 4th byte of the bitmap: 11111111
    for (int i = startSeq5 + 24; i < startSeq5 + 32; i++)
    {
        blockAck.SetReceivedPacket(i, 4);
    }
    // 5th byte of the bitmap: 00001111
    for (int i = startSeq5 + 32; i < startSeq5 + 36; i++)
    {
        blockAck.SetReceivedPacket(i, 4);
    }
    // 6th byte of the bitmap: 11110000
    for (int i = startSeq5 + 44; i < startSeq5 + 48; i++)
    {
        blockAck.SetReceivedPacket(i, 4);
    }
    // 7th byte of the bitmap: 00000000
    // 8th byte of the bitmap: 11111111
    for (int i = startSeq5 + 56; i < startSeq5 + 64; i++)
    {
        blockAck.SetReceivedPacket(i, 4);
    }
    // 9th byte of the bitmap: 00000000
    // 10th byte of the bitmap: 11111111
    for (int i = startSeq5 + 72; i < startSeq5 + 80; i++)
    {
        blockAck.SetReceivedPacket(i, 4);
    }
    // 11th byte of the bitmap: 00000000
    // 12th byte of the bitmap: 11111111
    for (int i = startSeq5 + 88; i < startSeq5 + 96; i++)
    {
        blockAck.SetReceivedPacket(i, 4);
    }
    // 13th byte of the bitmap: 00000000
    // 14th byte of the bitmap: 11111111
    for (int i = (startSeq5 + 104) % 4096; i < (startSeq5 + 112) % 4096; i++)
    {
        blockAck.SetReceivedPacket(i, 4);
    }
    // 15th byte of the bitmap: 00000000
    // 16th byte of the bitmap: 11111111
    for (int i = (startSeq5 + 120) % 4096; i < (startSeq5 + 128) % 4096; i++)
    {
        blockAck.SetReceivedPacket(i, 4);
    }
    // 17th byte of the bitmap: 00000000
    // 18th byte of the bitmap: 11111111
    for (int i = (startSeq5 + 136) % 4096; i < (startSeq5 + 144) % 4096; i++)
    {
        blockAck.SetReceivedPacket(i, 4);
    }
    // 19th byte of the bitmap: 00000000
    // 20th byte of the bitmap: 11111111
    for (int i = (startSeq5 + 152) % 4096; i < (startSeq5 + 160) % 4096; i++)
    {
        blockAck.SetReceivedPacket(i, 4);
    }
    // 21th byte of the bitmap: 00000000
    // 22th byte of the bitmap: 11111111
    for (int i = (startSeq5 + 168) % 4096; i < (startSeq5 + 176) % 4096; i++)
    {
        blockAck.SetReceivedPacket(i, 4);
    }
    // 23th byte of the bitmap: 00000000
    // 24th byte of the bitmap: 11111111
    for (int i = (startSeq5 + 184) % 4096; i < (startSeq5 + 192) % 4096; i++)
    {
        blockAck.SetReceivedPacket(i, 4);
    }
    // 25th byte of the bitmap: 00000000
    // 26th byte of the bitmap: 11111111
    for (int i = (startSeq5 + 200) % 4096; i < (startSeq5 + 208) % 4096; i++)
    {
        blockAck.SetReceivedPacket(i, 4);
    }
    // 27th byte of the bitmap: 00000000
    // 28th byte of the bitmap: 11111111
    for (int i = (startSeq5 + 216) % 4096; i < (startSeq5 + 224) % 4096; i++)
    {
        blockAck.SetReceivedPacket(i, 4);
    }
    // 29th byte of the bitmap: 00000000
    // 30th byte of the bitmap: 11111111
    for (int i = (startSeq5 + 232) % 4096; i < (startSeq5 + 240) % 4096; i++)
    {
        blockAck.SetReceivedPacket(i, 4);
    }
    // 31th byte of the bitmap: 00000000
    // 32th byte of the bitmap: 11111111
    for (int i = (startSeq5 + 248) % 4096; i < (startSeq5 + 256) % 4096; i++)
    {
        blockAck.SetReceivedPacket(i, 4);
    }
 
    /* 6th Per AID TID Info subfield */
    uint16_t aid6 = 2045;
    bool ackType6 = true;
    uint8_t tid6 = 6;
    Mac48Address address6("00:00:00:00:00:01");
 
    blockAck.SetAid11(aid6, 5);
    blockAck.SetAckType(ackType6, 5);
    blockAck.SetTidInfo(tid6, 5);
    blockAck.SetUnassociatedStaAddress(address6, 5);
 
    // Serialize the header
    Ptr<Packet> packet = Create<Packet>();
    packet->AddHeader(blockAck);
 
    // Deserialize the header
    CtrlBAckResponseHeader blockAckCopy;
    packet->RemoveHeader(blockAckCopy);
 
    // Check that the header has been correctly deserialized
    BlockAckType baTypeCopy = blockAckCopy.GetType();
 
    NS_TEST_EXPECT_MSG_EQ(baTypeCopy.m_variant,
                          BlockAckType::MULTI_STA,
                          "Different block ack variant");
    NS_TEST_EXPECT_MSG_EQ(baTypeCopy.m_bitmapLen.size(), 6, "Different number of bitmaps");
    NS_TEST_EXPECT_MSG_EQ(baTypeCopy.m_bitmapLen[0], 0, "Different length of the first bitmap");
    NS_TEST_EXPECT_MSG_EQ(baTypeCopy.m_bitmapLen[1], 4, "Different length of the second bitmap");
    NS_TEST_EXPECT_MSG_EQ(baTypeCopy.m_bitmapLen[2], 8, "Different length of the third bitmap");
    NS_TEST_EXPECT_MSG_EQ(baTypeCopy.m_bitmapLen[3], 16, "Different length of the fourth bitmap");
    NS_TEST_EXPECT_MSG_EQ(baTypeCopy.m_bitmapLen[4], 32, "Different length of the fifth bitmap");
    NS_TEST_EXPECT_MSG_EQ(baTypeCopy.m_bitmapLen[5], 8, "Different length for the sixth bitmap");
 
    /* Check 1st Per AID TID Info subfield */
    NS_TEST_EXPECT_MSG_EQ(blockAckCopy.GetAid11(0),
                          aid1,
                          "Different AID for the first Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(blockAckCopy.GetAckType(0),
                          ackType1,
                          "Different Ack Type for the first Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(blockAckCopy.GetTidInfo(0),
                          tid1,
                          "Different TID for the first Per AID TID Info subfield");
 
    /* Check 2nd Per AID TID Info subfield */
    NS_TEST_EXPECT_MSG_EQ(blockAckCopy.GetAid11(1),
                          aid2,
                          "Different AID for the second Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(blockAckCopy.GetAckType(1),
                          ackType2,
                          "Different Ack Type for the second Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(blockAckCopy.GetTidInfo(1),
                          tid2,
                          "Different TID for the second Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        blockAckCopy.GetStartingSequence(1),
        startSeq2,
        "Different starting sequence number for the second Per AID TID Info subfield");
 
    auto& bitmap2 = blockAckCopy.GetBitmap(1);
    NS_TEST_EXPECT_MSG_EQ(bitmap2.size(),
                          4,
                          "Different bitmap length for the second Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap2[0],
        0x55,
        "Error in the 1st byte of the bitmap for the second Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap2[1],
        0xaa,
        "Error in the 2nd byte of the bitmap for the second Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap2[2],
        0x00,
        "Error in the 3rd byte of the bitmap for the second Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap2[3],
        0xff,
        "Error in the 4th byte of the bitmap for the second Per AID TID Info subfield");
 
    /* Check 3rd Per AID TID Info subfield */
    NS_TEST_EXPECT_MSG_EQ(blockAckCopy.GetAid11(2),
                          aid3,
                          "Different AID for the third Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(blockAckCopy.GetAckType(2),
                          ackType3,
                          "Different Ack Type for the third Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(blockAckCopy.GetTidInfo(2),
                          tid3,
                          "Different TID for the third Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        blockAckCopy.GetStartingSequence(2),
        startSeq3,
        "Different starting sequence number for the third Per AID TID Info subfield");
 
    auto& bitmap3 = blockAckCopy.GetBitmap(2);
    NS_TEST_EXPECT_MSG_EQ(bitmap3.size(),
                          8,
                          "Different bitmap length for the third Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap3[0],
        0x55,
        "Error in the 1st byte of the bitmap for the third Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap3[1],
        0xaa,
        "Error in the 2nd byte of the bitmap for the third Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap3[2],
        0x00,
        "Error in the 3rd byte of the bitmap for the third Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap3[3],
        0xff,
        "Error in the 4th byte of the bitmap for the third Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap3[4],
        0x0f,
        "Error in the 5th byte of the bitmap for the third Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap3[5],
        0xf0,
        "Error in the 6th byte of the bitmap for the third Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap3[6],
        0x00,
        "Error in the 7th byte of the bitmap for the third Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap3[7],
        0xff,
        "Error in the 8th byte of the bitmap for the third Per AID TID Info subfield");
 
    /* Check 4th Per AID TID Info subfield */
    NS_TEST_EXPECT_MSG_EQ(blockAckCopy.GetAid11(3),
                          aid4,
                          "Different AID for the fourth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(blockAckCopy.GetAckType(3),
                          ackType4,
                          "Different Ack Type for the fourth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(blockAckCopy.GetTidInfo(3),
                          tid4,
                          "Different TID for the fourth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        blockAckCopy.GetStartingSequence(3),
        startSeq4,
        "Different starting sequence number for the fourth Per AID TID Info subfield");
 
    auto& bitmap4 = blockAckCopy.GetBitmap(3);
    NS_TEST_EXPECT_MSG_EQ(bitmap4.size(),
                          16,
                          "Different bitmap length for the fourth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap4[0],
        0x55,
        "Error in the 1st byte of the bitmap for the fourth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap4[1],
        0xaa,
        "Error in the 2nd byte of the bitmap for the fourth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap4[2],
        0x00,
        "Error in the 3rd byte of the bitmap for the fourth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap4[3],
        0xff,
        "Error in the 4th byte of the bitmap for the fourth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap4[4],
        0x0f,
        "Error in the 5th byte of the bitmap for the fourth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap4[5],
        0xf0,
        "Error in the 6th byte of the bitmap for the fourth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap4[6],
        0x00,
        "Error in the 7th byte of the bitmap for the fourth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap4[7],
        0xff,
        "Error in the 8th byte of the bitmap for the fourth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap4[8],
        0x00,
        "Error in the 9th byte of the bitmap for the fourth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap4[9],
        0xff,
        "Error in the 10th byte of the bitmap for the fourth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap4[10],
        0x00,
        "Error in the 11th byte of the bitmap for the fourth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap4[11],
        0xff,
        "Error in the 12th byte of the bitmap for the fourth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap4[12],
        0x00,
        "Error in the 13th byte of the bitmap for the fourth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap4[13],
        0xff,
        "Error in the 14th byte of the bitmap for the fourth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap4[14],
        0x00,
        "Error in the 15th byte of the bitmap for the fourth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap4[15],
        0xff,
        "Error in the 16th byte of the bitmap for the fourth Per AID TID Info subfield");
 
    /* Check 5th Per AID TID Info subfield */
    NS_TEST_EXPECT_MSG_EQ(blockAckCopy.GetAid11(4),
                          aid5,
                          "Different AID for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(blockAckCopy.GetAckType(4),
                          ackType5,
                          "Different Ack Type for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(blockAckCopy.GetTidInfo(4),
                          tid5,
                          "Different TID for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        blockAckCopy.GetStartingSequence(4),
        startSeq5,
        "Different starting sequence number for the fifth Per AID TID Info subfield");
 
    auto& bitmap5 = blockAckCopy.GetBitmap(4);
    NS_TEST_EXPECT_MSG_EQ(bitmap5.size(),
                          32,
                          "Different bitmap length for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[0],
        0x55,
        "Error in the 1st byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[1],
        0xaa,
        "Error in the 2nd byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[2],
        0x00,
        "Error in the 3rd byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[3],
        0xff,
        "Error in the 4th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[4],
        0x0f,
        "Error in the 5th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[5],
        0xf0,
        "Error in the 6th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[6],
        0x00,
        "Error in the 7th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[7],
        0xff,
        "Error in the 8th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[8],
        0x00,
        "Error in the 9th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[9],
        0xff,
        "Error in the 10th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[10],
        0x00,
        "Error in the 11th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[11],
        0xff,
        "Error in the 12th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[12],
        0x00,
        "Error in the 13th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[13],
        0xff,
        "Error in the 14th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[14],
        0x00,
        "Error in the 15th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[15],
        0xff,
        "Error in the 16th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[16],
        0x00,
        "Error in the 17th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[17],
        0xff,
        "Error in the 18th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[18],
        0x00,
        "Error in the 19th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[19],
        0xff,
        "Error in the 20th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[20],
        0x00,
        "Error in the 21th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[21],
        0xff,
        "Error in the 22th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[22],
        0x00,
        "Error in the 23th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[23],
        0xff,
        "Error in the 24th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[24],
        0x00,
        "Error in the 25th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[25],
        0xff,
        "Error in the 26th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[26],
        0x00,
        "Error in the 27th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[27],
        0xff,
        "Error in the 28th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[28],
        0x00,
        "Error in the 29th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[29],
        0xff,
        "Error in the 30th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[30],
        0x00,
        "Error in the 31th byte of the bitmap for the fifth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        bitmap5[31],
        0xff,
        "Error in the 32th byte of the bitmap for the fifth Per AID TID Info subfield");
 
    /* Check 6th Per AID TID Info subfield */
    NS_TEST_EXPECT_MSG_EQ(blockAckCopy.GetAid11(5),
                          aid6,
                          "Different AID for the sixth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(blockAckCopy.GetAckType(5),
                          ackType6,
                          "Different Ack Type for the sixth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(blockAckCopy.GetTidInfo(5),
                          tid6,
                          "Different TID for the sixth Per AID TID Info subfield");
    NS_TEST_EXPECT_MSG_EQ(
        blockAckCopy.GetUnassociatedStaAddress(5),
        address6,
        "Different starting sequence number for the sixth Per AID TID Info subfield");
}
 
/**
 * \ingroup wifi-test
 * \ingroup tests
 *
 * \brief Test for Block Ack Policy with aggregation disabled
 *
 * This test aims to check the Block Ack policy when A-MPDU aggregation is disabled.
 * In this case, a QoS station can transmit multiple QoS data frames before requesting
 * a Block Ack through a Block Ack Request frame. If the AC is granted a non-null TXOP
 * limit, MPDUs can be separated by a SIFS.
 *
 * In this test, an HT STA sends 14 packets to an HT AP. The ack policy selector is
 * configured so that a Block Ack is requested once 8 (= 0.125 * 64) MPDUs are sent
 * in addition to the MPDU having the starting sequence number. The block ack threshold
 * is set to 2, hence a block ack agreement is established when there are at least two
 * packets in the EDCA queue.
 *
 * When the TXOP limit is null:
 * - the first packet is sent with Normal Ack policy because the BA agreement has not
 *   been established yet (there are no queued packets when the first one arrives);
 * - packets from the 2nd to the 10th are sent with Block Ack policy (and hence
 *   are not immediately acknowledged);
 * - after the 10th packet, a Block Ack Request is sent, followed by a Block Ack;
 * - the remaining 4 packets are sent with Block Ack policy (and hence
 *   are not immediately acknowledged);
 * - the last packet is followed by a Block Ack Request because there are no more
 *   packets in the EDCA queue and hence a response is needed independently of
 *   the number of outstanding MPDUs.
 *
 * When the TXOP is not null (and long enough to include the transmission of all packets):
 * - the first packet is sent with Normal Ack policy because the BA agreement has not
 *   been established yet (there are no queued packets when the first one arrives);
 * - the second packet is sent with Normal Ack Policy because the first packet sent in
 *   a TXOP shall request an immediate response and no previous MPDUs have to be
 *   acknowledged;
 * - packets from the 3rd to the 11th are sent with Block Ack policy (and hence
 *   are not immediately acknowledged);
 * - after the 11th packet, a Block Ack Request is sent, followed by a Block Ack;
 * - the remaining 3 packets are sent with Block Ack policy (and hence
 *   are not immediately acknowledged);
 * - the last packet is followed by a Block Ack Request because there are no more
 *   packets in the EDCA queue and hence a response is needed independently of
 *   the number of outstanding MPDUs.
 */
class BlockAckAggregationDisabledTest : public TestCase
{
    /**
     * Keeps the maximum duration among all TXOPs
     */
    struct TxopDurationTracer
    {
        /**
         * Callback for the TxopTrace trace
         * \param startTime TXOP start time
         * \param duration TXOP duration
         * \param linkId the ID of the link
         */
        void Trace(Time startTime, Time duration, uint8_t linkId);
        Time m_max{Seconds(0)}; ///< max TXOP duration
    };
 
  public:
    /**
     * \brief Constructor
     * \param txop true for non-null TXOP limit
     */
    BlockAckAggregationDisabledTest(bool txop);
    ~BlockAckAggregationDisabledTest() override;
 
    void DoRun() override;
 
  private:
    bool m_txop;           ///< true for non-null TXOP limit
    uint32_t m_received;   ///< received packets
    uint16_t m_txTotal;    ///< transmitted data packets
    uint16_t m_txSinceBar; ///< packets transmitted since the agreement was established
                           ///< or the last block ack was received
    uint16_t m_nBar;       ///< transmitted BlockAckReq frames
    uint16_t m_nBa;        ///< received BlockAck frames
 
    /**
     * Function to trace packets received by the server application
     * \param context the context
     * \param p the packet
     * \param adr the address
     */
    void L7Receive(std::string context, Ptr<const Packet> p, const Address& adr);
    /**
     * Callback invoked when PHY transmits a packet
     * \param context the context
     * \param p the packet
     * \param power the tx power
     */
    void Transmit(std::string context, Ptr<const Packet> p, double power);
    /**
     * Callback invoked when PHY receives a packet
     * \param context the context
     * \param p the packet
     * \param rxPowersW the received power per channel band in watts
     */
    void Receive(std::string context, Ptr<const Packet> p, RxPowerWattPerChannelBand rxPowersW);
};
 
void
BlockAckAggregationDisabledTest::TxopDurationTracer::Trace(Time startTime,
                                                           Time duration,
                                                           uint8_t linkId)
{
    if (duration > m_max)
    {
        m_max = duration;
    }
}
 
BlockAckAggregationDisabledTest::BlockAckAggregationDisabledTest(bool txop)
    : TestCase("Test case for Block Ack Policy with aggregation disabled"),
      m_txop(txop),
      m_received(0),
      m_txTotal(0),
      m_txSinceBar(0),
      m_nBar(0),
      m_nBa(0)
{
}
 
BlockAckAggregationDisabledTest::~BlockAckAggregationDisabledTest()
{
}
 
void
BlockAckAggregationDisabledTest::L7Receive(std::string context,
                                           Ptr<const Packet> p,
                                           const Address& adr)
{
    if (p->GetSize() == 1400)
    {
        m_received++;
    }
}
 
void
BlockAckAggregationDisabledTest::Transmit(std::string context, Ptr<const Packet> p, double power)
{
    WifiMacHeader hdr;
    p->PeekHeader(hdr);
 
    if (m_nBar < 2 && (m_txSinceBar == 9 || m_txTotal == 14))
    {
        NS_TEST_ASSERT_MSG_EQ(hdr.IsBlockAckReq(), true, "Didn't get a BlockAckReq when expected");
    }
    else
    {
        NS_TEST_ASSERT_MSG_EQ(hdr.IsBlockAckReq(), false, "Got a BlockAckReq when not expected");
    }
 
    if (hdr.IsQosData())
    {
        m_txTotal++;
        if (hdr.IsQosBlockAck())
        {
            m_txSinceBar++;
        }
 
        if (!m_txop)
        {
            NS_TEST_EXPECT_MSG_EQ((m_txTotal == 1 || hdr.IsQosBlockAck()),
                                  true,
                                  "Unexpected QoS ack policy");
        }
        else
        {
            NS_TEST_EXPECT_MSG_EQ((m_txTotal <= 2 || hdr.IsQosBlockAck()),
                                  true,
                                  "Unexpected QoS ack policy");
        }
    }
    else if (hdr.IsBlockAckReq())
    {
        m_txSinceBar = 0;
        m_nBar++;
    }
}
 
void
BlockAckAggregationDisabledTest::Receive(std::string context,
                                         Ptr<const Packet> p,
                                         RxPowerWattPerChannelBand rxPowersW)
{
    WifiMacHeader hdr;
    p->PeekHeader(hdr);
 
    if (hdr.IsBlockAck())
    {
        m_nBa++;
    }
}
 
void
BlockAckAggregationDisabledTest::DoRun()
{
    NodeContainer wifiStaNode;
    wifiStaNode.Create(1);
 
    NodeContainer wifiApNode;
    wifiApNode.Create(1);
 
    YansWifiChannelHelper channel = YansWifiChannelHelper::Default();
    YansWifiPhyHelper phy;
    phy.SetChannel(channel.Create());
 
    WifiHelper wifi;
    wifi.SetStandard(WIFI_STANDARD_80211n);
    Config::SetDefault("ns3::WifiDefaultAckManager::BaThreshold", DoubleValue(0.125));
    wifi.SetRemoteStationManager("ns3::IdealWifiManager");
 
    WifiMacHelper mac;
    Ssid ssid = Ssid("ns-3-ssid");
    mac.SetType("ns3::StaWifiMac",
                "BE_MaxAmsduSize",
                UintegerValue(0),
                "BE_MaxAmpduSize",
                UintegerValue(0),
                "Ssid",
                SsidValue(ssid),
                /* setting blockack threshold for sta's BE queue */
                "BE_BlockAckThreshold",
                UintegerValue(2),
                "ActiveProbing",
                BooleanValue(false));
 
    NetDeviceContainer staDevices;
    staDevices = wifi.Install(phy, mac, wifiStaNode);
 
    mac.SetType("ns3::ApWifiMac",
                "BE_MaxAmsduSize",
                UintegerValue(0),
                "BE_MaxAmpduSize",
                UintegerValue(0),
                "Ssid",
                SsidValue(ssid),
                "BeaconGeneration",
                BooleanValue(true));
 
    if (m_txop)
    {
        // set the TXOP limit on BE AC
        mac.SetEdca(AC_BE,
                    "TxopLimits",
                    AttributeContainerValue<TimeValue>(std::list{MicroSeconds(4800)}));
    }
 
    NetDeviceContainer apDevices;
    apDevices = wifi.Install(phy, mac, wifiApNode);
 
    MobilityHelper mobility;
    Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator>();
 
    positionAlloc->Add(Vector(0.0, 0.0, 0.0));
    positionAlloc->Add(Vector(1.0, 0.0, 0.0));
    mobility.SetPositionAllocator(positionAlloc);
 
    mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
    mobility.Install(wifiApNode);
    mobility.Install(wifiStaNode);
 
    Ptr<WifiNetDevice> ap_device = DynamicCast<WifiNetDevice>(apDevices.Get(0));
    Ptr<WifiNetDevice> sta_device = DynamicCast<WifiNetDevice>(staDevices.Get(0));
 
    // Disable A-MPDU aggregation
    sta_device->GetMac()->SetAttribute("BE_MaxAmpduSize", UintegerValue(0));
    TxopDurationTracer txopTracer;
 
    if (m_txop)
    {
        PointerValue ptr;
        sta_device->GetMac()->GetAttribute("BE_Txop", ptr);
        ptr.Get<QosTxop>()->TraceConnectWithoutContext(
            "TxopTrace",
            MakeCallback(&TxopDurationTracer::Trace, &txopTracer));
    }
 
    PacketSocketAddress socket;
    socket.SetSingleDevice(sta_device->GetIfIndex());
    socket.SetPhysicalAddress(ap_device->GetAddress());
    socket.SetProtocol(1);
 
    // give packet socket powers to nodes.
    PacketSocketHelper packetSocket;
    packetSocket.Install(wifiStaNode);
    packetSocket.Install(wifiApNode);
 
    // the first client application generates a single packet, which is sent
    // with the normal ack policy because there are no other packets queued
    Ptr<PacketSocketClient> client1 = CreateObject<PacketSocketClient>();
    client1->SetAttribute("PacketSize", UintegerValue(1400));
    client1->SetAttribute("MaxPackets", UintegerValue(1));
    client1->SetAttribute("Interval", TimeValue(MicroSeconds(0)));
    client1->SetRemote(socket);
    wifiStaNode.Get(0)->AddApplication(client1);
    client1->SetStartTime(Seconds(1));
    client1->SetStopTime(Seconds(3.0));
 
    // the second client application generates 13 packets. Even if when the first
    // packet is queued the queue is empty, the first packet is not transmitted
    // immediately, but the EDCAF waits for the next slot boundary. At that time,
    // other packets have been queued, hence a BA agreement is established first.
    Ptr<PacketSocketClient> client2 = CreateObject<PacketSocketClient>();
    client2->SetAttribute("PacketSize", UintegerValue(1400));
    client2->SetAttribute("MaxPackets", UintegerValue(13));
    client2->SetAttribute("Interval", TimeValue(MicroSeconds(0)));
    client2->SetRemote(socket);
    wifiStaNode.Get(0)->AddApplication(client2);
    client2->SetStartTime(Seconds(1.5));
    client2->SetStopTime(Seconds(3.0));
 
    Ptr<PacketSocketServer> server = CreateObject<PacketSocketServer>();
    server->SetLocal(socket);
    wifiApNode.Get(0)->AddApplication(server);
    server->SetStartTime(Seconds(0.0));
    server->SetStopTime(Seconds(4.0));
 
    Config::Connect("/NodeList/*/ApplicationList/0/$ns3::PacketSocketServer/Rx",
                    MakeCallback(&BlockAckAggregationDisabledTest::L7Receive, this));
    Config::Connect("/NodeList/0/DeviceList/0/Phy/PhyTxBegin",
                    MakeCallback(&BlockAckAggregationDisabledTest::Transmit, this));
    Config::Connect("/NodeList/0/DeviceList/0/Phy/PhyRxBegin",
                    MakeCallback(&BlockAckAggregationDisabledTest::Receive, this));
 
    Simulator::Stop(Seconds(5));
    Simulator::Run();
 
    Simulator::Destroy();
 
    // The client applications generate 14 packets, so we expect that the wifi PHY
    // layer transmits 14 MPDUs, the server application receives 14 packets, and
    // two BARs are transmitted.
    NS_TEST_EXPECT_MSG_EQ(m_txTotal, 14, "Unexpected number of transmitted packets");
    NS_TEST_EXPECT_MSG_EQ(m_received, 14, "Unexpected number of received packets");
    NS_TEST_EXPECT_MSG_EQ(m_nBar, 2, "Unexpected number of Block Ack Requests");
    NS_TEST_EXPECT_MSG_EQ(m_nBa, 2, "Unexpected number of Block Ack Responses");
    if (m_txop)
    {
        NS_TEST_EXPECT_MSG_LT(txopTracer.m_max, MicroSeconds(4800), "TXOP duration exceeded!");
        NS_TEST_EXPECT_MSG_GT(txopTracer.m_max,
                              MicroSeconds(3008),
                              "The maximum TXOP duration is too short!");
    }
}
 
/**
 * \ingroup wifi-test
 * \ingroup tests
 *
 * \brief Block Ack Test Suite
 */
class BlockAckTestSuite : public TestSuite
{
  public:
    BlockAckTestSuite();
};
 
BlockAckTestSuite::BlockAckTestSuite()
    : TestSuite("wifi-block-ack", Type::UNIT)
{
    AddTestCase(new PacketBufferingCaseA, TestCase::Duration::QUICK);
    AddTestCase(new PacketBufferingCaseB, TestCase::Duration::QUICK);
    AddTestCase(new OriginatorBlockAckWindowTest, TestCase::Duration::QUICK);
    AddTestCase(new CtrlBAckResponseHeaderTest, TestCase::Duration::QUICK);
    AddTestCase(new BlockAckRecipientBufferTest(0), TestCase::Duration::QUICK);
    AddTestCase(new BlockAckRecipientBufferTest(4090), TestCase::Duration::QUICK);
    AddTestCase(new MultiStaCtrlBAckResponseHeaderTest, TestCase::Duration::QUICK);
    AddTestCase(new BlockAckAggregationDisabledTest(false), TestCase::Duration::QUICK);
    AddTestCase(new BlockAckAggregationDisabledTest(true), TestCase::Duration::QUICK);
}
 
static BlockAckTestSuite g_blockAckTestSuite; ///< the test suite